Checker board



FIG. 1 is a plan view of the checker board of the present invention, the shading designating color, the solid black representing the color black; the lines angled upward to the right representing the color brown, the narrowly spaced lines angled upward to the left representing the color green; and the wider spaced lines angled upward to the left representing the color light green. 

The ornamental design for a checker board, as shown and described. 